why my search_agent don't get any iterations?

I use the offical input file as recommandation. Here's my output.

{"query": "when was puerto rico added to the usa", "episode": "q0: \"when was puerto rico added to the usa\"\nanswer: \"1950\"\nfinal_query: \"when was puerto rico added to the usa\"\n"}
{"query": "names of the metropolitan municipalities in south africa", "episode": "q0: \"names of the metropolitan municipalities in south africa\"\nanswer: \"Mangaung Metropolitan Municipality\\tNelson Mandela Bay Metropolitan Municipality\\teThekwini Metropolitan Municipality\\tCity of Tshwane Metropolitan Municipality\\tCity of Johannesburg Metropolitan Municipality\\tBuffalo City Metropolitan Municipality\\tCity of Ekurhuleni Metropolitan Municipality\"\nfinal_query: \"names of the metropolitan municipalities in south africa\"\n"}
{"query": "where does it talk about mary magdalene in the bible", "episode": "q0: \"where does it talk about mary magdalene in the bible\"\nanswer: \"New Testament\"\nfinal_query: \"where does it talk about mary magdalene in the bible\"\n"}
{"query": "who is the guy who voiced disney channel", "episode": "q0: \"who is the guy who voiced disney channel\"\nanswer: \"\\\"Buzz\\\" Brainard\\tCameron\"\nfinal_query: \"who is the guy who voiced disney channel\"\n"}
{"query": "who starred in the movie deep water horizon", "episode": "q0: \"who starred in the movie deep water horizon\"\nanswer: \"Kurt Russell\\tDylan O\\'Brien\\tJohn Malkovich\\tKate Hudson\\tGina Rodriguez\\tMark Wahlberg\"\nfinal_query: \"who starred in the movie deep water horizon\"\n"}
{"query": "who was the first one to migrate to madinah", "episode": "q0: \"who was the first one to migrate to madinah\"\nanswer: \"Islamic prophet Muhammad\"\nfinal_query: \"who was the first one to migrate to madinah\"\n"}
{"query": "what is the size of the angles of an equilateral triangle", "episode": "q0: \"what is the size of the angles of an equilateral triangle\"\nanswer: \"60\\302\\260\"\nfinal_query: \"what is the size of the angles of an equilateral triangle\"\n"}
{"query": "who wrote the music for somewhere in time", "episode": "q0: \"who wrote the music for somewhere in time\"\nanswer: \"John Barry\"\nfinal_query: \"who wrote the music for somewhere in time\"\n"}
{"query": "where is the new tottenham stadium being built", "episode": "q0: \"where is the new tottenham stadium being built\"\nanswer: \"the London Borough of Haringey\"\nfinal_query: \"where is the new tottenham stadium being built\"\n"}

It seems like nothing happens because I get the same q0 as my original query. So what's wrong with it?